There are quite a few configuration macros in the project.
As discussed in the #2520 issue there are a few awkward constructs.

Main changes:

* Renamed all CONFIG_DISABLE_<name>_BUILTIN macro to JERRY_BUILTIN_<name> format.
* The special JERRY_BUILTINS macro specifies the basic config for all es5.1 builtins.
* Renamed all CONFIG_DISABLE_ES2015_<name> to JERRY_ES2015_<name> format.
* The special JERRY_ES2015 macro specifies the basic config for all es2015 builtins.
* Renamed UNICODE_CASE_CONVERSION to JERRY_UNICODE_CASE_CONVERSION.
* Renamed ENABLE_REGEXP_STRICT_MODE to JERRY_REGEXP_STRICT_MODE.
* All options (in this change) can have a value of 0 or 1.
* Renamed ENABLE_REGEXP_STRICT_MODE to JERRY_REGEXP_STRICT_MODE.
  JERRY_REGEXP_STRICT_MODE is set to 0 by default.
* Reworked CONFIG_ECMA_NUMBER_TYPE macro to JERRY_NUMBER_TYPE_FLOAT64 name and now
  it uses the value 1 for 64 bit floating point numbers and 0 for 32 bit floating point
  number.
  By default the 64-bit floating point number mode is enabled.
* All new JERRY_ defines can be used wit the `#if ENABLED (JERRY_...)` construct to
  test if the feature is enabled or not.
* Added/replaced a few config.h includes to correctly propagate the macro values.
* Added sanity checks for each macro to avoid incorrectly set values.
* Updated profile documentation.
* The CMake feature names are not updated at this point.

JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.u-szeged@partner.samsung.com

Since the project is now hosted at the JS Foundation we can move to unified copyright notices for the project.

Starting with this commit all future contributions to the project should only carry the following copyright notice (except for third-party code which requires copyright information to be preserved):

"Copyright JS Foundation and other contributors, http://js.foundation" (without the quotes)

This avoids cluttering the codebase with contributor-specific copyright notices which have a higher maintenance overhead and tend to get outdated quickly. Also dropping the year from the copyright notices helps to avoid yearly code changes just to update the copyright notices.

Note that each contributor still retains full copyright ownership of his/her contributions and the respective authorship is tracked very accurately via Git.

JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller t.scheller@samsung.com

The standard doesn't defines ECMAScript Compact Profile as a subset of Ecma-262 Edition 5.1.
Profile modes can be added easily like the minimal profile if required.

JerryScript-DCO-1.0-Signed-off-by: Robert Sipka rsipka.uszeged@partner.samsung.com

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

Remove ecma_completion_value_t, and add an extra bit to
ecma_value_t to represent errors. From the long list of
completion types only normal and error remained.

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

Move all '.cpp' files to '.c'.
Rename comments from 'cpp' to 'c'.

JerryScript-DCO-1.0-Signed-off-by: Roland Takacs rtakacs.u-szeged@partner.samsung.com
JerryScript-DCO-1.0-Signed-off-by: Robert Sipka rsipka.uszeged@partner.samsung.com

JerryScript-DCO-1.0-Signed-off-by: Andrey Shitov a.shitov@samsung.com

Supplementing ECMA_TRY_CATCH with assertion that 'return_value' contains empty completion value prior to execution of ECMA_TRY_CATCH statement.

JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com

 - components renaming and moving:
   - liballocator -> mem;
   - libcoreint -> vm;
   - libecmaobjects -> ecma/base;
   - libecmaoperations -> ecma/operations;
   - libecmabuiltins -> ecma/builtins;
   - libjsparser -> parser/js;
   - libintstructs -> parser/collections;
   - liboptimizer -> parser/js;
   - libperipherals -> ../plugins/lib_device_stm;
   - libruntime -> jrt;
 - generated.h now is created as intermediate during build;
 - benchmarks -> tests/benchmarks;
 - docs -> documentation;
 - demo-applications removed (loop_demo.js -> tests/blinky.js).

Reverting changes related to on-stack GC-root introduction (except of passing ecma_value_t by const reference).

This reverts commits:
     31e1405f39d72f8b885e92256b0dc29ecab1a99,
     7cb43840b59c539d9b043990ed658ae15a9defc3,
     1ab57a4493689806035a9853b0030cc6fea65590,
     c24b511ca60587e0db12d46a7e7567c86c3649bc,
     b2caf3e8b31b4b6b16499108ee3aabdcb94f0717,
     44f9c307fb6204bfd2181b19a9d94cabddf04de9.

Converting ecma_completion_value_t to class derived from ecma_value_t with additional field with for completion type and related operations.

Completion value are now returned through ecma_completion_value_t &ret_value argument.

Original ecma_value_t is renamed to ecma_value_packed_t and is used for on-heap storage.
Copy and move constructors, move assignment operator of ecma_value_t are not created.
New ecma-value return convention is introduced: ecma-values are now returned through ecma_value_t &ret_val argument.

Returning ecma_value_t instead of ecma_completion_value_t from ECMA_TRY_CATCH for case when completion value is normal.

Introducing ecma_get_[type]_from_value, ecma_get_[type]_from_completion_value and ecma_get_completion_value_value interfaces.

Replacing invocations of ECMA_GET_POINTER passing non-NULL argument with introduced ECMA_GET_NON_NULL_POINTER.

In the mode built-in objects except Global, Object, Object.prototype, Function,
Function.prototype, [[ThrowTypeError]] and CompactProfileError are disabled.

Making default builds (without cp cp_minimal modes set) to not define CONFIG_ECMA_COMPACT_PROFILE.
Removing some tests that depend on 'eval'-like functionality or CompactProfileError built-in from pre-commit testing.

Implementing EvalError, RangeError, SyntaxError, URIError built-ins and corresponding prototype built-in objects.

Implementing TypeError and TypeError.prototype built-ins. Fixing Error.prototype.toString implementation.