style: eliminate equality tests with true and false

Using '== true' in a boolean expression is totally redundant,
and using '== false' is pretty verbose (and arguably less
readable in most cases) compared to '!'.

It's somewhat of a pet peeve, perhaps, but I had some time
waiting for some tests to run and decided to clean these up.

Unfortunately, SLICC appears not to have the '!' operator,
so I had to leave the '== false' tests in the SLICC code.

src/base/loader/hex_file.cc

@@ -104,7 +104,7 @@ HexFile::parseLine(char *Str, Addr *A, uint32_t *D)
         } else if (Str[i] == ' ' || Str[i] == '\n') {
             if (Number == 0)
                 return;
-            if (Flag == false) {
+            if (!Flag) {
                 *A = Number;
                 Number = 0;
                 Flag = true;
@@ -125,7 +125,7 @@ HexFile::parseLine(char *Str, Addr *A, uint32_t *D)
         i++;
     }
 
-    if (Flag != true) {
+    if (!Flag) {
         *A = 0;
         *D = 0;
     } else {

src/base/match.cc

@@ -89,7 +89,7 @@ ObjectMatch::domatch(const string &name) const
             }
         }
 
-        if (match == true)
+        if (match)
             return true;
     }