webp - promote to default on

i just noticed a pattern... we recommend in our sample confs ... to
not disable webp. why keep doing that and why not just make it a dep
on by default you need to explicitly disable? make lives easier and
less complex. it was a good exercise to write these as it points this
out... :)

README

@@ -464,11 +464,7 @@ Required by default:
   * libspectre
   * librsvg
   * openmp (clang needs libomp, while gcc uses libgomp)
-
-You might want webp support so disable fewer loaders and remove webp
-from the disablers with:
-
-    -Devas-loaders-disabler=json
+  * libwebp
 
 Wayland support:
 

confs/freebsd.sh

@@ -1,3 +1,3 @@
 #!/bin/sh -e
-meson -Dsystemd=false -Dv4l2=false -Deeze=false -Devas-loaders-disabler=json \
+meson -Dsystemd=false -Dv4l2=false -Deeze=false \
  $@ . build

confs/linux-elogind.sh

@@ -1,4 +1,3 @@
 #!/bin/sh -e
-meson -Dfb=true -Ddrm=true -Dwl=true -Devas-loaders-disabler=json \
- -Dsystemd=false -Delogind=true \
+meson -Dfb=true -Ddrm=true -Dwl=true -Dsystemd=false -Delogind=true \
  $@ . build

confs/linux-nowayland-nosystemd.sh

@@ -1,3 +1,3 @@
 #!/bin/sh -e
-meson -Dfb=true -Dsystemd=false -Devas-loaders-disabler=json \
+meson -Dfb=true -Dsystemd=false\
  $@ . build

confs/linux-nowayland.sh

@@ -1,3 +1,3 @@
 #!/bin/sh -e
-meson -Dfb=true -Devas-loaders-disabler=json \
+meson -Dfb=true \
  $@ . build

confs/linux.sh

@@ -1,3 +1,3 @@
 #!/bin/sh -e
-meson -Dfb=true -Ddrm=true -Dwl=true -Devas-loaders-disabler=json \
+meson -Dfb=true -Ddrm=true -Dwl=true \
  $@ . build

meson_options.txt

@@ -190,7 +190,7 @@ option('evas-loaders-disabler',
   type : 'array',
   description : 'List of modular image/vector loaders to disable in efl',
   choices : ['gst', 'pdf', 'ps', 'raw', 'svg', 'rsvg', 'xcf', 'bmp', 'dds', 'eet', 'generic', 'gif', 'ico', 'jp2k', 'jpeg', 'pmaps', 'png', 'psd', 'tga', 'tgv', 'tiff', 'wbmp', 'webp', 'xpm', 'json'],
-  value : ['webp', 'json']
+  value : ['json']
 )
 
 option('ecore-imf-loaders-disabler',