use external snappy library and fix building

mongodb/mongodb.patch

@@ -97,17 +97,6 @@ Index: third_party/pcre.py
  
  
  if __name__ == "__main__":
-Index: shell/mongo.cpp
---- shell/mongo.cpp.orig	2012-06-08 16:10:55.000000000 +0200
-+++ shell/mongo.cpp	2012-06-08 18:31:21.000000000 +0200
-@@ -620,7 +620,6 @@
- "}*/\n" 
- "\n" 
- "if ( typeof _threadInject != \"undefined\" ){\n" 
--"print( \"fork() available!\" );\n" 
- "\n" 
- "Thread = function(){\n" 
- "this.init.apply( this, arguments );\n" 
 Index: shell/utils.js
 --- shell/utils.js.orig	2012-06-04 15:42:54.000000000 +0200
 +++ shell/utils.js	2012-06-08 18:31:30.000000000 +0200

mongodb/mongodb.spec

@@ -43,8 +43,8 @@ Patch0:       mongodb.patch
 #   build information
 BuildPreReq:  OpenPKG, openpkg >= 20100101, gcc, gcc::with_cxx = yes, scons
 PreReq:       OpenPKG, openpkg >= 20100101
-BuildPreReq:  boost, libexecinfo, v8, openssl, pcre, pcre::with_cxx = yes
-PreReq:       boost, libexecinfo, v8, openssl, pcre, pcre::with_cxx = yes
+BuildPreReq:  boost, libexecinfo, v8, openssl, pcre, pcre::with_cxx = yes, snappy
+PreReq:       boost, libexecinfo, v8, openssl, pcre, pcre::with_cxx = yes, snappy
 
 %description
     MongoDB bridges the gap between key-value stores (which are fast and
@@ -89,6 +89,7 @@ PreReq:       boost, libexecinfo, v8, openssl, pcre, pcre::with_cxx = yes
         --release \
         --static \
         --use-system-pcre \
+        --use-system-snappy \
         --usev8 \
         --ssl \
         .