XTPE_LINK_TYPE --> CRAYPE_LINK_TYPE in third-party/tcmalloc/Makefile.
XTPE_LINK_TYPE --> CRAYPE_LINK_TYPE in third-party/tcmalloc/Makefile.

[discussed with Greg and David]

This enables tcmalloc to build on our XC machines, whereas without it
the linker thought it was to link statically.
Alternative solution (thought of by Greg) could have been to remove
"--enable-shared=no" option from CONFIG_FLAGS in the Makefile.
(Check the tcmalloc configure script for the options and defaults.)
We might want an option to build statically, too.

Anyway, apparently the old XTPE_LINK_TYPE has been obsoleted. When we
do use XTPE_LINK_TYPE, it is silently ignored.

Greg expressed a concern about non-Cray systems.

David says "We currently set XTPE_LINK_TYPE for tcmalloc no matter what
the target is. Changing it seems fine to me since the non-Cray systems
must just ignore it. We should probably only set it for Cray though
eventually."


git-svn-id: 88467cb1fb04b8a755be7e1ee1026be4190196ef@22322 3a8e244f-b0f2-452b-bcba-4c88e055c3ca

sungeunchoi/chapel,hildeth/chapel,hildeth/chapel,chizarlicious/chapel,sungeunchoi/chapel,hildeth/chapel,chizarlicious/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,chizarlicious/chapel,hildeth/chapel,CoryMcCartan/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,sungeunchoi/chapel,chizarlicious/chapel,hildeth/chapel,sungeunchoi/chapel,chizarlicious/chapel,hildeth/chapel,CoryMcCartan/chapel,chizarlicious/chapel,CoryMcCartan/chapel,sungeunchoi/chapel,sungeunchoi/chapel,CoryMcCartan/chapel,chizarlicious/chapel,hildeth/chapel,CoryMcCartan/chapel