[Cleanup] Removed .jvm.cs files that are no longer used

They were once part of a special Java target profile, but this is no longer used today.
[Cleanup] Removed net_1_1_java*.sources files

They were once part of a special Java target profile, but this is no longer used today.
[Cleanup] Removed net_1_1_java from Makefiles

It was once part of a special Java target profile, but this is no longer used today.
[Cleanup] Removed JavaEE csproj and sln files

They were once part of a special Java target profile, but this is no longer used today.
[Cleanup] Removed files that imported Java namespaces

They were once part of a special Java target profile, but this is no longer used today.
[Cleanup] Removed TARGET_JVM

It was once part of a special Java target profile, but this is no longer used today.
[Sgen] Transport scan macros from sgen-descriptor.h to sgen-scan-object.h

This commit transport the scan macro from sgen-descritor.h to
sgen-scan-object.h. This is useful for modify at compile time
the scan macro according to the scan function.

I release this change under the MIT license.
[Sgen] Implement partial marking for big array of objects

This commit changed the gray stack to support work items. When a big
array of objects is marked, Sgen now create several work items. Every
work item rappresents a pieces of the array that must be scanned.
Since they are different pieces, the workers can now parallel scan
and mark the array, resulting in a better work distribution between
the workers.

I release this change under the MIT license.
Test DateTimeOffest parsing of partial dates.
[eglib] Fix logging on iOS (asl_vlog != asl_log)

asl_vlog last parameter is a va_list and giving it a char* leads to crash
which calls our native unhandled exception handler, which also tries to
log what happens making the watchdog unhappy about the food quality

0x000000008badf00d
Test xls transformation of single child node to an attribute.
Process XslLiteralElements with only child attributes as empty ones.
Fixes #14751
Merge pull request #1230 from esdrubal/xslattribute

Process XslLiteralElements with only child attributes as empty ones.
Serializer were not generated if generationThreshold was changed.
Merge pull request #1231 from esdrubal/gthreshold

Serializer were not generated if generationThreshold was changed.
[mcs] Add 6.0 to version error reporting
Fix badge URL in README.md, the previous one got cached by GitHub
[runtime] Incorporate team feedback on the new logging APIs.
[MSBuild] Fixed a test that failed when the GAC wasn't available

PR #1229 added a test that relies on the GAC and fails when it isn't available, like when building on a clean machine with monolite.
Skip the test in that case.
Merge pull request #1232 from akoeplinger/fix-test

[MSBuild] Fixed a test that failed when the GAC wasn't available