Install fwts globally in the snap instead of in /usr (bugfix) (canonical#1891)

Install fwts globally in the snap instead of in /usr

This is to avoid having to do weird hacks with the PATH and
LD_LIBRARY_PATH to make both the lib and the bin accessible

Author: Hook25

checkbox-core-snap/series16/snap/snapcraft.yaml

@@ -77,6 +77,10 @@ parts:
     source-depth: 1
     plugin: autotools
     source: https://github.com/fwts/fwts.git
+    # needed because default is /usr/local
+    # if you change this update LD_LIBRARY_PATH
+    configflags:
+      - --prefix=/
     stage-packages:
       - libfdt1
       - libbsd0

checkbox-core-snap/series18/snap/snapcraft.yaml

@@ -81,6 +81,10 @@ parts:
     source-depth: 1
     plugin: autotools
     source: https://github.com/fwts/fwts.git
+    # needed because default is /usr/local
+    # if you change this update LD_LIBRARY_PATH
+    configflags:
+      - --prefix=/
     stage-packages:
       - libfdt1
       - libbsd0

checkbox-core-snap/series20/snap/snapcraft.yaml

@@ -81,6 +81,10 @@ parts:
     source-depth: 1
     plugin: autotools
     source: https://github.com/fwts/fwts.git
+    # needed because default is /usr/local
+    # if you change this update LD_LIBRARY_PATH
+    autotools-configure-parameters:
+      - --prefix=/
     stage-packages:
       - libfdt1
       - libbsd0

checkbox-core-snap/series22/snap/snapcraft.yaml

@@ -85,6 +85,10 @@ parts:
     source-depth: 1
     plugin: autotools
     source: https://github.com/fwts/fwts.git
+    # needed because default is /usr/local
+    # if you change this update LD_LIBRARY_PATH
+    autotools-configure-parameters:
+      - --prefix=/
     stage-packages:
       - libfdt1
       - libbsd0

checkbox-core-snap/series24/snap/snapcraft.yaml

@@ -82,6 +82,10 @@ parts:
     source-depth: 1
     plugin: autotools
     source: https://github.com/fwts/fwts.git
+    # needed because default is /usr/local
+    # if you change this update LD_LIBRARY_PATH
+    autotools-configure-parameters:
+      - --prefix=/
     stage-packages:
       - libfdt1
       - libbsd0