Added public files

Roughly added all public files. Probably missed some, though.
diff --git a/doc/efun/regexplode b/doc/efun/regexplode
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+SYNOPSIS
+        #include <regexp.h>
+
+        string *regexplode (string text, string pattern)
+        string *regexplode (string text, string pattern, int opt)
+
+DESCRIPTION
+        This function is similar to explode but accepts a regular
+        expression <pattern> as delimiter (interpreted according to <opt>
+        if given).
+
+        If flag RE_OMIT_DELIM is not set in <opt>, then every second element
+        in the result vector will be the text that matched the delimiter.
+        If the flag is set, then the result vector will contain only
+        the text between the delimiters.
+
+EXAMPLES
+        regexplode("abcdef", "cde")                -> ({ "ab", "cde", "f" })
+        regexplode("abcdef", "cde", RE_OMIT_DELIM) -> ({ "ab", "f" })
+
+HISTORY
+        Introduced in 3.2@61
+        LDMud 3.3 added the optional <opt> argument and the RE_OMIT_DELIM
+          flag.
+
+SEE ALSO
+        explode(E), regexp(E), regmatch(E), regreplace(E),
+        regexp_package(E), regexp(C)