Bug fix, sort of.
Description:
Some compilers, e.g., intel compiler, would take a long time
to compiler H5detect.c if optimization is on.
Solution:
Setup special make rules for H5detect to be compiled always with
optimization off by using -g. Since H5detect is run once to generate H5Tinit.c,
it does not matter that much if it is optimized or not.
Platforms tested:
"h5committested".
Tested in Titan too.
5937bcd021