[Lib] Update Fmtlib, and enable it for Linux builds. This is bare bones; only removing the Linux workarounds in Cmake.

indra/cmake/Linking.cmake

@@ -50,12 +50,10 @@ if (LINUX)
   set(DL_LIBRARY dl)
   set(RT_LIBRARY rt)
   set(PTHREAD_LIBRARY pthread)
-  set(FMT_LIBRARY "")
 else (LINUX)
   set(DL_LIBRARY "")
   set(RT_LIBRARY "")
   set(PTHREAD_LIBRARY "")
-  set(FMT_LIBRARY fmt::fmt)
 endif (LINUX)
 
 if (WINDOWS)
@@ -77,6 +75,6 @@ else (WINDOWS)
   set(WINDOWS_LIBRARIES "")
 endif (WINDOWS)
     
-mark_as_advanced(DL_LIBRARY RT_LIBRARY PTHREAD_LIBRARY FMT_LIBRARY WINDOWS_LIBRARIES)
+mark_as_advanced(DL_LIBRARY RT_LIBRARY PTHREAD_LIBRARY WINDOWS_LIBRARIES)
 
 endif(NOT DEFINED ${CMAKE_CURRENT_LIST_FILE}_INCLUDED)