enable precompiled headers for msvc7,
probably they were disabled because of some Wine bug
diff --git a/auto/cc/msvc b/auto/cc/msvc
index 8cf87fa..dde8448 100644
--- a/auto/cc/msvc
+++ b/auto/cc/msvc
@@ -96,12 +96,10 @@
 
 
 # precompiled headers
-if [ $NGX_CC_NAME != msvc7 ]; then
-    CORE_DEPS="$CORE_DEPS $NGX_OBJS/ngx_config.pch"
-    NGX_PCH="$NGX_OBJS/ngx_config.pch"
-    NGX_BUILD_PCH="-Ycngx_config.h -Fp$NGX_OBJS/ngx_config.pch"
-    NGX_USE_PCH="-Yungx_config.h -Fp$NGX_OBJS/ngx_config.pch"
-fi
+CORE_DEPS="$CORE_DEPS $NGX_OBJS/ngx_config.pch"
+NGX_PCH="$NGX_OBJS/ngx_config.pch"
+NGX_BUILD_PCH="-Ycngx_config.h -Fp$NGX_OBJS/ngx_config.pch"
+NGX_USE_PCH="-Yungx_config.h -Fp$NGX_OBJS/ngx_config.pch"
 
 
 # the resource file