TS-1987: rip out ink_string_fast_ functions
TS-1987: replace ink_string_fast functions

with their standard libc equivalent.
TS-2097: remove unsued string functions

first round of removing unsued/useless string functions
TS-2097 replace ink_string_copy() w/ ink_strlcpy()

we already have ink_strlcpy() in our reportoire, and ink_string_copy()
is only used twice. We replace those two occurances.
TS-2097 Remove ink_string_find_dotted_extension()
TS-2097: remove ink_strtok_r() wrapper
add TS-1987, TS-2097 to CHANGES
TS-2100 Initialize the SSL/NPN registration mutex
fix indentation
TS-1953: close this by adding an example & CHANGES
TS-2102 SPDY plugin tries to setup protocol handler too early.
TS-2051: Fix SSL crash due to excess READ_COMPLETE events.
Updated with TS-2099