fixed -Wold-style-declaration compiler warnings

Example:
```
fontutils/fv1.c:36:1: error: ‘static’ is not at beginning of declaration [-Werror=old-style-declaration]
   36 | const static char FV1_SIGNATURE[] = {'F', 'N', 'T', '1'};
      | ^~~~~
```

fontutils/fv1.c

@@ -33,7 +33,7 @@
 #include "string_calls.h"
 #include "fv1.h"
 
-const static char FV1_SIGNATURE[] = {'F', 'N', 'T', '1'};
+static const char FV1_SIGNATURE[] = {'F', 'N', 'T', '1'};
 
 /*****************************************************************************/
 struct fv1_glyph *

tests/common/test_parse.c

@@ -11,12 +11,12 @@
 
 #define ELEMENTS(x) (sizeof(x) / sizeof(x[0]))
 
-const static char
+static const char
 utf8_simple_test_with_emoji[] =
     "Simple Test."
     "\xf0\x9f\x98\xa5"; // U+1F625 Disappointed But Relieved Face
 
-const static char16_t
+static const char16_t
 utf16_simple_test_with_emoji[] =
 {
     'S', 'i', 'm', 'p', 'l', 'e', ' ', 'T', 'e', 's', 't', '.',

tests/common/test_string_calls_unicode.c

@@ -34,7 +34,7 @@ struct utf8_encode_sub_test
 };
 
 // Used as the simple test in UTF-8-test.txt
-const static char greek_kosme[] =
+static const char greek_kosme[] =
     "\xce\xba" // GREEK SMALL LETTER KAPPA
     "\xe1\xbd\xb9" // GREEK SMALL LETTER OMICRON WITH OXIA
     "\xcf\x83" // GREEK SMALL LETTER SIGMA
@@ -42,7 +42,7 @@ const static char greek_kosme[] =
     "\xce\xb5"; // GREEK SMALL LETTER EPSILON
 
 // See Issue #2603
-const static char simple_test_with_emoji[] =
+static const char simple_test_with_emoji[] =
     "Simple Test."
     "\xf0\x9f\x98\xa5"; // U+1F625 Disappointed But Relieved Face