switch_toupper
switch_tolower
switch_isalnum
switch_isalpha
switch_iscntrl
switch_isdigit
switch_isgraph
switch_islower
switch_isprint
switch_ispunct
switch_isspace
switch_isupper
switch_isxdigit

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@10761 d0543943-73ff-0310-b7d9-9358b9ac24b2