[Ctags] Patch for template support

[Jim C. <jim...@gm...>]

I've added initial support for templates, as well as a few other
additions to ctags.
I've attached a patch file ( I hope I made it correctly) that people
can use to patch the code from the 5.5.4 release from the SF project
site.

My changes add the following enhancements:

types that declared as templates are properly parsed, so:
std::map<int,int> myMap;
will be parsed correctly. Also support for the "::" in identifiers was adde=
d.

The type info for variables and typedefs is now stored. I have added a
new parameter/flag to toggle the output of the variable. Using  +/-
't' with the --fields switch will toggle this information. If it's
turned on, then the text "typeinfo:" is added with the
variable/typedef's type so:

std::map<int,int> myMap;

would show up as
myMap=09test.h=0919;"=09typeinfo:std::map<int,int>

in the tag file

Template information is stored as well, and is toggled on or off by
using the +/- "T" with the --fields switch. If it's enabled, then the
text "templateSignature" is added like so:

template <typename MyType>
class  Foo {};

would show as
Foo=09test.h=093;"=09templateSignature:< typename MyType>

Hope this helps,

Cheers

Jim Crafton