Fixed handling of svgs in PolygonSymbolizer

[lgoltz]

Fixes #1093

[lgoltz]

Verified by user.

[tfr42]

Imports shall be explicit, not java.awt.*

[copierrj]

Question: what happens when another image format (like png) is used instead of svg?

[lgoltz]

Imports shall be explicit, not java.awt.*

Fixed

[lgoltz]

Question: what happens when another image format (like png) is used instead of svg?

Images in other formats than svg are read during parsing:

deegree3/deegree-core/deegree-core-style/src/main/java/org/deegree/style/se/parser/GraphicSymbologyParser.java

Lines 373 to 375 in d9ccf38

	if ( pair.first != null && format != null && ( format.toLowerCase().indexOf( "svg" ) == -1 ) ) {
	img = ImageIO.read( pair.first );
	}

The enhancements applies only if graphic.image == null (in case of svgs and marks).