Enhanced wxGlade GUI creation.
- Frame object name now have same name as in editor
- Closing the frame replace object by None, warn user, and recreate frame
<xsd:attribute name="Compiler" type="xsd:string" use="optional" default="gcc"/>
<xsd:attribute name="CFLAGS" type="xsd:string" use="required"/>
<xsd:attribute name="Linker" type="xsd:string" use="optional" default="g++"/>
<xsd:attribute name="LDFLAGS" type="xsd:string" use="required"/>