* lisp/progmodes/hideif.el: Style fixes. Fix doc-strings and comment style,

also add a change log entry for the latest hideif.el changes.

lisp/ChangeLog

+2014-06-26  Luke Lee  <luke.yx.lee@gmail.com>
+
+	* lisp/progmodes/hideif.el (hif-string-to-number): Fix return value bug.
+	(hif-simple-token-only, hif-tokenize): Commented in detail mainly for
+	performance enhancements.
+	(hif-parse-if-exp): Rename to `hif-parse-exp'. Enhanced for macro
+	expansion.
+	(hif-factor, hif-string-concatenation, intern-safe): Support string
+	concatenation and argumented macro expansion.
+	(hif-if-valid-identifier-p, hif-define-operator, hif-flatten)
+	(hif-expand-token-list, hif-get-argument-list, hif-define-macro)
+	(hif-delimit, hif-macro-supply-arguments, hif-invoke, hif-canonicalize)
+	(hif-canonicalize-tokens, hif-place-macro-invocation)
+	(hif-parse-macro-arglist): Mostly new functions for supporting
+	argumented macro expansion.
+	(hif-string-concatenation, hif-stringify, hif-token-concat)
+	(hif-token-stringification, hif-token-concatenation): Stringification
+	and concatenation.
+	(hif-find-next-relevant): Fix comments.
+	(hif-ifdef-to-endif, hif-looking-at-elif, hif-hide-line): Bug fix for
+	some cases involving #elif.
+	(hif-find-define, hif-add-new-defines): New functions for automatically
+	scanning of defined symbols.
+	(hide-ifdef-guts): Fix for defined symbol auto scanning.
+	(hide-ifdef-undef): Fix behavior to match CPP.
+
 2014-06-26  Glenn Morris  <rgm@gnu.org>
 
 	* Makefile.in (update-authors): Update for moved authors.el.