Replace _mesa_malloc, _mesa_calloc and _mesa_free with plain libc versions
diff --git a/src/mesa/shader/program.c b/src/mesa/shader/program.c
index 0c3c5ff..f4f701b 100644
--- a/src/mesa/shader/program.c
+++ b/src/mesa/shader/program.c
@@ -127,11 +127,11 @@
    if (ctx->ATIFragmentShader.Current) {
       ctx->ATIFragmentShader.Current->RefCount--;
       if (ctx->ATIFragmentShader.Current->RefCount <= 0) {
-         _mesa_free(ctx->ATIFragmentShader.Current);
+         free(ctx->ATIFragmentShader.Current);
       }
    }
 #endif
-   _mesa_free((void *) ctx->Program.ErrorString);
+   free((void *) ctx->Program.ErrorString);
 }
 
 
@@ -162,7 +162,7 @@
    if (ctx->ATIFragmentShader.Current) {
       ctx->ATIFragmentShader.Current->RefCount--;
       if (ctx->ATIFragmentShader.Current->RefCount <= 0) {
-         _mesa_free(ctx->ATIFragmentShader.Current);
+         free(ctx->ATIFragmentShader.Current);
       }
    }
    ctx->ATIFragmentShader.Current = (struct ati_fragment_shader *) ctx->Shared->DefaultFragmentShader;
@@ -180,7 +180,7 @@
 _mesa_set_program_error(GLcontext *ctx, GLint pos, const char *string)
 {
    ctx->Program.ErrorPos = pos;
-   _mesa_free((void *) ctx->Program.ErrorString);
+   free((void *) ctx->Program.ErrorString);
    if (!string)
       string = "";
    ctx->Program.ErrorString = _mesa_strdup(string);
@@ -190,7 +190,7 @@
 /**
  * Find the line number and column for 'pos' within 'string'.
  * Return a copy of the line which contains 'pos'.  Free the line with
- * _mesa_free().
+ * free().
  * \param string  the program string
  * \param pos     the position within the string
  * \param line    returns the line number corresponding to 'pos'.
@@ -222,7 +222,7 @@
    while (*p != 0 && *p != '\n')
       p++;
    len = p - lineStart;
-   s = (GLubyte *) _mesa_malloc(len + 1);
+   s = (GLubyte *) malloc(len + 1);
    memcpy(s, lineStart, len);
    s[len] = 0;
 
@@ -337,7 +337,7 @@
       return;
 
    if (prog->String)
-      _mesa_free(prog->String);
+      free(prog->String);
 
    _mesa_free_instructions(prog->Instructions, prog->NumInstructions);
 
@@ -351,7 +351,7 @@
       _mesa_free_parameter_list(prog->Attributes);
    }
 
-   _mesa_free(prog);
+   free(prog);
 }