Few more GCC 4.7 fixes.

include unistd when not on windows.

indra/llcommon/llfile.cpp

@@ -35,6 +35,8 @@
 
 #if LL_WINDOWS
 #include <windows.h>
+#else
+#include <unistd.h>
 #endif
 
 #include "linden_common.h"

indra/llcommon/llprocesslauncher.cpp

@@ -42,6 +42,7 @@
 #if LL_DARWIN || LL_LINUX
 // not required or present on Win32
 #include <sys/wait.h>
+#include <unistd.h>
 #endif
 
 LLProcessLauncher::LLProcessLauncher()

indra/llmessage/lliopipe.h

@@ -55,11 +55,11 @@ void pump_debug(const char *file, S32 line);
 /**
  * intrusive pointer support
  */
-namespace boost
-{
+//namespace boost
+//{
 	void intrusive_ptr_add_ref(LLIOPipe* p);
 	void intrusive_ptr_release(LLIOPipe* p);
-};
+//};
 
 /** 
  * @class LLIOPipe

indra/llmessage/tests/llcurl_stub.cpp

@@ -77,8 +77,8 @@ void LLCurl::Responder::result(LLSD const&)
 {
 }
 
-namespace boost
-{
+//namespace boost
+//{
 	void intrusive_ptr_add_ref(LLCurl::Responder* p)
 	{
 		++p->mReferenceCount;
@@ -91,5 +91,5 @@ namespace boost
 			delete p;
 		}
 	}
-};
+//};
 

indra/llvfs/llpidlock.cpp

@@ -54,6 +54,7 @@ static bool isProcessAlive(U32 pid)
 }
 
 #else   //Everyone Else
+#include <unistd.h>
 
 static U32 getPID() {
 	return getpid();

indra/plugins/webkit/linux_volume_catcher.cpp

@@ -40,6 +40,9 @@
 
 #include "volume_catcher.h"
 
+#ifndef LL_WINDOWS
+#include <unistd.h>
+#endif
 
 extern "C" {
 #include <glib.h>