Changed spelling "Commerical" to "Commercial"
mysqld.vcproj:
  Aligned engines with Unix version
sql_class.cc:
  VC7 needs my_free() cast of first arg to be (gptr)
my_global.h:
  Can't assume macro set_timespec_nsec exists if set_timespec does


include/my_global.h:
  Can't assume macro set_timespec_nsec exists if set_timespec does
sql/sql_class.cc:
  VC7 needs my_free() cast of first arg to be (gptr)
VC++Files/sql/mysqld.vcproj:
  Aligned engines with Unix version
VC++Files/libmysqld/libmysqld.vcproj:
  Changed spelling "Commerical" to "Commercial"