[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.
Add g_Ctoc to list of acceptable g_* symbols in mono, for test-eglib-remap.

In theory, this test is used to verify that no unknown glib symbols exist
in eglib. However, it's tripping on g_Ctoc which is not a glib (or eglib)
symbol, instead it comes from the IO layer - and glib symbols never use
uppercase characters anyway
Minimal implementation of classes and methods necessary to support the JWT functionality in System.IdentityModel.Tokens.Jwt (https://github.com/MSOpenTech/azure-activedirectory-identitymodel-extensions-for-dotnet).  This change is released under the MIT license.
Fix VS changes to .csproj file.  This change is released under the MIT license.
Add file comment headers.  This change is released under the MIT license.
Add compiler pragmas for conditional .NET 4.5 compilation
Test XDocument.Changed event. Covers #18772.
Changed XObject OnChanged and OnChanging to use Owner.
When XObject.Owner is not a XElement XObject.Parent returns null and the owner would not be notified of changing and changed events.
Fixes:#18772
Fixed DateTime compiler errors.
Merge pull request #1236 from NoesisLabs/master

Support JWT functionality in System.IdentityModel.Tokens.Jwt
Merge pull request #1238 from esdrubal/datetimeoffset

Fixed DateTime compiler errors.
[runtime] Fix a crash in the logging profiler when enumerating elf images.
Merge pull request #1235 from directhex/master

Add g_Ctoc to list of acceptable g_* symbols in mono, for test-eglib-remap
Revert "Merge pull request #1219 from panzone/los_partial_marking"

This reverts commit 397176d70101b9bcb7b016ad028378cadb3d302e, reversing
changes made to 33c345a945fb67d8964213dc032214ba65e55321.
Merge pull request #1200 from akoeplinger/remove-jvm

[Cleanup] Remove TARGET_JVM