Merge tcmalloc r111 (perftools v. 1.8) with the chromium/ branch.

third_party/tcmalloc/chromium/src/config_linux.h

 /* src/config.h.  Generated from config.h.in by configure.  */
 /* src/config.h.in.  Generated from configure.ac by autoheader.  */
 
 /* Define to 1 if compiler supports __builtin_stack_pointer */
 /* #undef HAVE_BUILTIN_STACK_POINTER */
 
 /* Define to 1 if you have the <conflict-signal.h> header file. */
 /* #undef HAVE_CONFLICT_SIGNAL_H */
 
 /* Define to 1 if you have the <cygwin/signal.h> header file. */
@@ skipping 170 matching lines @@
 /* prefix where we look for installed files */
 #define INSTALL_PREFIX "/usr/local"
 
 /* Define to 1 if int32_t is equivalent to intptr_t */
 /* #undef INT32_EQUALS_INTPTR */
 
 /* Define to the sub-directory in which libtool stores uninstalled libraries.
    */
 #undef LT_OBJDIR
 
+/* Define to 'volatile' if __malloc_hook is declared volatile */
+#ifdef __MALLOC_HOOK_VOLATILE
+#define MALLOC_HOOK_MAYBE_VOLATILE volatile
+#else
+#define MALLOC_HOOK_MAYBE_VOLATILE
+#endif
+
 /* Define to 1 if your C compiler doesn't accept -c and -o together. */
 /* #undef NO_MINUS_C_MINUS_O */
 
 /* Name of package */
 #define PACKAGE "google-perftools"
 
 /* Define to the address where bug reports for this package should be sent. */
 #define PACKAGE_BUGREPORT "opensource@google.com"
 
 /* Define to the full name of this package. */
@@ skipping 23 matching lines @@
 
 /* printf format code for printing a size_t and ssize_t */
 #define PRIdS "zd"
 
 /* printf format code for printing a size_t and ssize_t */
 #define PRIuS "zu"
 
 /* printf format code for printing a size_t and ssize_t */
 #define PRIxS "zx"
 
+/* Mark the systems where we know it's bad if pthreads runs too
+   early before main (before threads are initialized, presumably).  */
+#undef PTHREADS_CRASHES_IF_RUN_TOO_EARLY
+
 /* Define to necessary symbol if this constant uses a non-standard name on
    your system. */
 /* #undef PTHREAD_CREATE_JOINABLE */
 
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1
 
 /* the namespace where STL code like vector<> is defined */
 #define STL_NAMESPACE std
 
 /* Version number of package */
 #define VERSION "1.7"
 
 /* C99 says: define this to get the PRI... macros from stdint.h */
 #ifndef __STDC_FORMAT_MACROS
 # define __STDC_FORMAT_MACROS 1
 #endif
 
 /* Define to `__inline__' or `__inline' if that's what the C compiler
    calls it, or to nothing if 'inline' is not supported under any name.  */
 #ifndef __cplusplus
 /* #undef inline */
 #endif
 
 
 #ifdef __MINGW32__
 #include "windows/mingw.h"
 #endif