minor: (consistency) remove labels from prototypes
minor - fix typo in doc
fix race in mcdb_mmap_thread_registration()

fix race in mcdb_mmap_thread_registration(): return modified mcdb_map
fix inverted logic bug in nss_mcdb.c that resulted in excess work
plasma/* macros for compiler,hardware micro ops

plasma/* - portability macros for compiler and hardware micro operations
plasma_attrs.h:  code attributes
plasma_membar.h: memory barriers
plasma_spin.h:   spin loop components

code_attributes.h: rename code_attributes.h to plasma/plasma_attrs.h
code_attributes.h: fix inverted logic in HP-UX prefetch
code_attributes.h: minor: add clang __has_feature() __has_exception()
code_attributes.h: minor: add MSC_VER and xlC support for __restrict
code_attributes.h: rename to plasma/plasma_attrs.h

use plasma/plasma_membar.h memory barriers in mcdb.c and nss_mcdb.c
convert #include <code_attributes.h> to #include <plasma/plasma_attrs.h>
mcdb v0.07