Fix a compiler error and a compiler warning

svn path=/trunk/boinc/; revision=17394

checkin_notes

@@ -2220,3 +2220,13 @@ David  25 Feb 2009
 
     api/
         texture.cpp
+
+Charlie 25 Feb 2009
+    
+    - MGR: Fix compiler warning.
+    - lib: Fix compiler error: Please do not use unmatched single quotes 
+        (I changed don't to don`t in #warning statement to fix this.)
+    clientgui/
+        ProjectInfoPage.cpp
+    lib/
+        mac_address.cpp

clientgui/ProjectInfoPage.cpp

@@ -178,7 +178,7 @@ wxWizardPageEx* CProjectInfoPage::GetNext() const
     } else {
         // Check if we are already attached to that project: 
  	CMainDocument* pDoc = wxGetApp().GetDocument(); 
- 	for (unsigned int i = 0; i < pDoc->GetProjectCount(); ++i) { 
+ 	for (int i = 0; i < pDoc->GetProjectCount(); ++i) { 
  	    PROJECT* project = pDoc->project(i); 
  	    if ((project) && (!strcmp(project->master_url.c_str(),m_strProjectURL.mb_str()))) { 
                 // We are already attached to that project. Show the error page: 

lib/mac_address.cpp

@@ -269,7 +269,7 @@ get_mac_addresses(char* addresses) {
 
     return true;
 #else
-#warning Don't know how to obtain mac address.  get_mac_addresses() will return false.
+#warning Don`t know how to obtain mac address.  get_mac_addresses() will return false.
     return false;
 #endif
 }