pngvalid tests: add --strict, fix test names

Signed-off-by: John Bowler <jbowler@acm.org>

tests/pngvalid-gamma-16-to-8

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --gamma-16-to-8
+exec ./pngvalid --strict --gamma-16-to-8

tests/pngvalid-gamma-alpha-mode

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --gamma-alpha-mode
+exec ./pngvalid --strict --gamma-alpha-mode

tests/pngvalid-gamma-background

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --gamma-background
+exec ./pngvalid --strict --gamma-background

tests/pngvalid-gamma-expand16-alpha-mode

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --gamma-alpha-mode --expand16
+exec ./pngvalid --strict --gamma-alpha-mode --expand16

tests/pngvalid-gamma-expand16-background

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --gamma-background --expand16
+exec ./pngvalid --strict --gamma-background --expand16

tests/pngvalid-gamma-expand16-transform

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --gamma-transform --expand16
+exec ./pngvalid --strict --gamma-transform --expand16

tests/pngvalid-gamma-sbit

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --gamma-sbit
+exec ./pngvalid --strict --gamma-sbit

tests/pngvalid-gamma-threshold

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --gamma-threshold
+exec ./pngvalid --strict --gamma-threshold

tests/pngvalid-gamma-transform

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --gamma-transform
+exec ./pngvalid --strict --gamma-transform

tests/pngvalid-progressive-interlace-size

@@ -1,2 +0,0 @@
-#!/bin/sh
-exec ./pngvalid --size --progressive-read

tests/pngvalid-progressive-interlace-standard

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --standard --progressive-read --interlace
+exec ./pngvalid --strict --standard --progressive-read --interlace

tests/pngvalid-progressive-interlace-transform

@@ -1,2 +0,0 @@
-#!/bin/sh
-exec ./pngvalid --transform

tests/pngvalid-progressive-size

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec ./pngvalid --strict --size --progressive-read

tests/pngvalid-progressive-standard

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --standard --progressive-read
+exec ./pngvalid --strict --standard --progressive-read

tests/pngvalid-standard

@@ -1,2 +1,2 @@
 #!/bin/sh
-exec ./pngvalid --standard
+exec ./pngvalid --strict --standard

tests/pngvalid-transform

@@ -0,0 +1,2 @@
+#!/bin/sh
+exec ./pngvalid --strict --transform