Gerbview: add gerber test file.

gerbview/gerber_test_files/test2_line_with_rect_aperture.gbr

@@ -0,0 +1,67 @@
+G04 start of page 2 for group 0 idx 0
+G04 Title: (unknown), component *
+G04 Creator: pcb 20080202 *
+G04 CreationDate: Sat 27 Feb 2010 07:29:32 PM GMT UTC *
+G04 For: randomplague *
+G04 Format: Gerber/RS-274X *
+G04 PCB-Dimensions: 70000 45000 *
+G04 PCB-Coordinate-Origin: lower left *
+%MOIN*%
+%FSLAX24Y24*%
+%LNFRONT*%
+%ADD11C,0.0200*%
+%ADD12C,0.0600*%
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+%ADD15C,0.0380*%
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