Remove support for GCC older than 3.3.0 from generated sources

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
diff --git a/src/glx/indirect.c b/src/glx/indirect.c
index 4a571a2..42a225f 100644
--- a/src/glx/indirect.c
+++ b/src/glx/indirect.c
@@ -53,7 +53,7 @@
 #    define NOINLINE
 #  endif
 
-#if !defined __GNUC__ || __GNUC__ < 3
+#ifndef __GNUC__
 #  define __builtin_expect(x, y) x
 #endif
 
diff --git a/src/glx/indirect.h b/src/glx/indirect.h
index 9e73b33..7064bfe 100644
--- a/src/glx/indirect.h
+++ b/src/glx/indirect.h
@@ -37,7 +37,7 @@
  * \author Ian Romanick <idr@us.ibm.com>
  */
 
-#  if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))) && defined(__ELF__)
+#  if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))) && defined(__ELF__)
 #    define HIDDEN  __attribute__((visibility("hidden")))
 #  else
 #    define HIDDEN
diff --git a/src/glx/indirect_size.c b/src/glx/indirect_size.c
index 6356ddd..5a8f27b 100644
--- a/src/glx/indirect_size.c
+++ b/src/glx/indirect_size.c
@@ -29,7 +29,7 @@
 #include <GL/gl.h>
 #include "indirect_size.h"
 
-#  if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
+#  if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
 #    define PURE __attribute__((pure))
 #  else
 #    define PURE
@@ -41,7 +41,7 @@
 #    define FASTCALL
 #  endif
 
-#  if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))) && defined(__ELF__)
+#  if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))) && defined(__ELF__)
 #    define INTERNAL  __attribute__((visibility("internal")))
 #  else
 #    define INTERNAL
diff --git a/src/glx/indirect_size.h b/src/glx/indirect_size.h
index af0919f..43f504a 100644
--- a/src/glx/indirect_size.h
+++ b/src/glx/indirect_size.h
@@ -36,7 +36,7 @@
  * \author Ian Romanick <idr@us.ibm.com>
  */
 
-#  if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
+#  if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
 #    define PURE __attribute__((pure))
 #  else
 #    define PURE
@@ -48,7 +48,7 @@
 #    define FASTCALL
 #  endif
 
-#  if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))) && defined(__ELF__)
+#  if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))) && defined(__ELF__)
 #    define INTERNAL  __attribute__((visibility("internal")))
 #  else
 #    define INTERNAL
diff --git a/src/mesa/glapi/glapitemp.h b/src/mesa/glapi/glapitemp.h
index 2ef4728..f9b803e 100644
--- a/src/mesa/glapi/glapitemp.h
+++ b/src/mesa/glapi/glapitemp.h
@@ -27,7 +27,7 @@
  */
 
 
-#  if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))) && defined(__ELF__)
+#  if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))) && defined(__ELF__)
 #    define HIDDEN  __attribute__((visibility("hidden")))
 #  else
 #    define HIDDEN
diff --git a/src/mesa/x86-64/glapi_x86-64.S b/src/mesa/x86-64/glapi_x86-64.S
index bd5a657..03a2c99 100644
--- a/src/mesa/x86-64/glapi_x86-64.S
+++ b/src/mesa/x86-64/glapi_x86-64.S
@@ -31,7 +31,7 @@
 
 #include "x86/assyntax.h"
 
-#if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303
+#ifdef __GNUC__
 #  pragma GCC visibility push(default)
 #  define HIDDEN(x) .hidden x
 #else