gprofng: fix 3 bugzillas against gp-display-html

gprofng: fix 3 bugzillas against gp-display-html

Fix two cases where gp-display-html terminates prematurely because the
input format is not recognized.  This problem occurs in the function
overview and caller-callee parts of the code.
The fix consists of new regular expressions and a different approach
in handling the input from gp-display-text.
Also fix a performance problem in the caller-callee part that has a
noticeable impact on the performance for large applications.

gprofng/ChangeLog
2024-01-10  Ruud van der Pas  <ruud.vanderpas@oracle.com>

	PR gprofng/30438
	PR gprofng/30439
	PR gprofng/30942
	* gp-display-html/gp-display-html.in: fixes the issues.