Update changelog for 1.1.2 EAP 2

Remove xerces from compiler uberjar, pack compiler with explicit jar …

…names

xercesImpl was unnecessarily added to the compiler uberjar during migration
to the idea platform 171. This caused NCDFE about classes from org.w3c
package.
And to simplify application of this commit and to ensure that only required
jars are packed into the uberjar, the build.xml was altered to use
explicit list of the jars from the ideaSdk/core directory, rather than
a mask.

Fixes #KT-17143 and #KT-17157