- Use the string literal separator (colon) instead of equals if the string
  value begins or ends in space or contains control characters.

iniGetString, etc. will preserve leading or trailing space characters in
a string specified with a colon key:value separator and enclosed in
double-quotes.
iniGetString, etc. will decode C-escaped string values specified with a
string literal (colon) key:value separator.

New function: iniSetStringLiteral() used to specify that the value shall
be stored in the .ini file using the colon key:value separator, enclosed
in double-quotes, and any special charactors (e.g. quotes, backslashes, etc.)
or control characters must be C-style escaped.