Run include-what-you-use limited to adding "my_compiler.h" and then re-sorting
the #includes (and nothing else); then remove "my_compiler.h" from my_global.h.

Necessitated some #include cleanups in group replication, which has a ton
of headers that are not self-sufficient.

Change-Id: If8d754f099ced06c44148018cd775799ae4caa54