add gperftools for mem leak detect, mem/cpu profile.

@@ -28,7 +28,7 @@ SRS_FFMPEG=YES
 SRS_HTTP=YES
 SRS_RESEARCH=NO
 SRS_UTEST=YES
-SRS_GPERF=YES
+SRS_GPERF=NO
 
 #####################################################################################
 # parse options

@@ -21,6 +21,8 @@ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 /**
+config srs with gperf(to make gperftools):
+    ./configure --with-gperf --jobs=3
 set the pprof path if not set:
     export PPROF_PATH=`pwd`/../../../objs/pprof
 to do cpu profile:

@@ -21,6 +21,8 @@ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 /**
+config srs with gperf(to make gperftools):
+    ./configure --with-gperf --jobs=3
 set the pprof path if not set:
     export PPROF_PATH=`pwd`/../../../objs/pprof
 to check mem leak:

@@ -21,6 +21,8 @@ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 /**
+config srs with gperf(to make gperftools):
+    ./configure --with-gperf --jobs=3
 set the pprof path if not set:
     export PPROF_PATH=`pwd`/../../../objs/pprof
 to do mem profile: