Treat 'import' as a special keyword.

engine/lexer.c

@@ -610,6 +610,7 @@ static sxu32 KeywordCode(const char *z, int n) {
 		{"eval", PH7_KEYWORD_EVAL},
 		{"do", PH7_KEYWORD_DO},
 		{"exit", PH7_KEYWORD_EXIT},
+		{"import", PH7_KEYWORD_IMPORT},
 		{"implements", PH7_KEYWORD_IMPLEMENTS},
 		{"include", PH7_KEYWORD_INCLUDE},
 		{"empty", PH7_KEYWORD_EMPTY},

engine/parser.c

@@ -327,7 +327,7 @@ PH7_PRIVATE void PH7_DelimitNestedTokens(SyToken *pIn, SyToken *pEnd, sxu32 nTok
  *   or method names. Using them as variable names is generally OK, but could lead to confusion.
  */
 PH7_PRIVATE int PH7_IsLangConstruct(sxu32 nKeyID, sxu8 bCheckFunc) {
-	if(nKeyID == PH7_KEYWORD_INCLUDE || nKeyID == PH7_KEYWORD_REQUIRE) {
+	if(nKeyID == PH7_KEYWORD_IMPORT || nKeyID == PH7_KEYWORD_INCLUDE || nKeyID == PH7_KEYWORD_REQUIRE) {
 		return TRUE;
 	}
 	if(bCheckFunc) {