First merge of 2.064 beta.

This corresponds to DMD commit a913ce4bc59a94a022a27e390fc841f4aededffb.

Doesn't build Phobos yet.

runtime/CMakeLists.txt

@@ -89,7 +89,6 @@ if(APPLE)
 endif()
 file(GLOB_RECURSE CORE_D_UNIX ${RUNTIME_DIR}/src/core/sys/posix/*.d)
 file(GLOB_RECURSE CORE_D_FREEBSD ${RUNTIME_DIR}/src/core/sys/freebsd/*.d)
-file(GLOB_RECURSE CORE_D_LINUX ${RUNTIME_DIR}/src/core/sys/linux/*.d)
 file(GLOB_RECURSE CORE_D_OSX ${RUNTIME_DIR}/src/core/sys/osx/*.d)
 file(GLOB_RECURSE CORE_D_WIN ${RUNTIME_DIR}/src/core/sys/windows/*.d)
 set(CORE_D_SYS)
@@ -99,9 +98,6 @@ if(UNIX)
     if(${CMAKE_SYSTEM} MATCHES "FreeBSD")
         list(APPEND CORE_D_SYS ${CORE_D_FREEBSD})
     endif()
-    if(${CMAKE_SYSTEM} MATCHES "Linux")
-        list(APPEND CORE_D_SYS ${CORE_D_LINUX})
-    endif()
     list(APPEND DCRT_ASM ${RUNTIME_DIR}/src/core/threadasm.S)
     if(APPLE)
         list(APPEND CORE_D_SYS ${CORE_D_OSX})