compiledict.c: Fix -Wmissing-prototypes warnings.

src/libespeak-ng/compiledict.c

 
 #define N_RULES 3000 // max rules for each group
 
-int isHexDigit(int c)
+static int isHexDigit(int c)
 {
 	if ((c >= '0') && (c <= '9'))
 		return c - '0';
 	return prule;
 }
 
-int __cdecl string_sorter(char **a, char **b)
+static int __cdecl string_sorter(char **a, char **b)
 {
 	char *pa, *pb;
 	int ix;

src/libespeak-ng/dictionary.c

 int dictionary_skipwords;
 char dictionary_name[40];
 
-extern void print_dictionary_flags(unsigned int *flags, char *buf, int buf_len);
-extern char *DecodeRule(const char *group_chars, int group_length, char *rule, int control);
-
 // accented characters which indicate (in some languages) the start of a separate syllable
 static const unsigned short diereses_list[7] = { 0xe4, 0xeb, 0xef, 0xf6, 0xfc, 0xff, 0 };
 

src/libespeak-ng/translate.h

 int LookupDictList(Translator *tr, char **wordptr, char *ph_out, unsigned int *flags, int end_flags, WORD_TAB *wtab);
 int HashDictionary(const char *string);
 
+void print_dictionary_flags(unsigned int *flags, char *buf, int buf_len);
+char *DecodeRule(const char *group_chars, int group_length, char *rule, int control);
+
 void MakePhonemeList(Translator *tr, int post_pause, int new_sentence);
 int ChangePhonemes_ru(Translator *tr, PHONEME_LIST2 *phlist, int n_ph, int index, PHONEME_TAB *ph, CHANGEPH *ch);
 void ApplySpecialAttribute2(Translator *tr, char *phonemes, int dict_flags);