CI: NSIS fixes and temporary removal of Linux builds.

Squashed commit of the following:

commit af422c72ccd31054ecb097313275e538c2c8f1ad
Author: Dominik Picheta <dominikpicheta@gmail.com>
Date:   Thu Sep 29 00:42:39 2016 +0200

    CI: Another attempt.

commit f187712192bf80394d0efd7e8ebfcdc07a13ca5a
Author: Dominik Picheta <dominikpicheta@gmail.com>
Date:   Thu Sep 29 00:32:53 2016 +0200

    CI: Remove building of docs before NSIS build.

commit 92abf82d9400ff7f03d7fbfdaaeeb2ee93e803a5
Author: Dominik Picheta <dominikpicheta@gmail.com>
Date:   Thu Sep 29 00:18:24 2016 +0200

    CI: Attempt to fix incorrect mingw arch.

commit 2ec54f89f9725208559f2080dd0f1533b9ae27e0
Author: Dominik Picheta <dominikpicheta@gmail.com>
Date:   Wed Sep 28 23:40:51 2016 +0200

    CI: Rebuild koch so that correct mingw links are put in NSIS.

commit 3118f0fea6fb8d7178e9267d3bf198b4784cb247
Author: Dominik Picheta <dominikpicheta@gmail.com>
Date:   Wed Sep 28 22:36:40 2016 +0200

    CI: Fixes ci

commit fc4d14aa325dc1a95cf63092b209b919df450dcd
Author: Dominik Picheta <dominikpicheta@gmail.com>
Date:   Wed Sep 28 22:35:00 2016 +0200

    CI: Disable linux for now.

.gitlab-ci.yml

@@ -18,19 +18,6 @@ stages:
   tags:
     - windows
 
-build-linux:
-  stage: build
-  script:
-    - sh ci/build.sh
-  artifacts:
-    paths:
-      - bin/nim
-      - bin/nimd
-      - compiler/nim
-      - koch
-    expire_in: 1 week
-  tags:
-    - linux
 
 build-windows:
   stage: build
@@ -58,15 +45,7 @@ deploy-windows:
     - windows
     - fast
 
-test-linux:
+
-  stage: test
-  <<: *linux_set_path_def
-  script:
-    - sh ci/deps.sh
-    - nim c --taintMode:on tests/testament/tester
-    - tests/testament/tester --pedantic all
-  tags:
-    - linux
 
 test-windows:
   stage: test
@@ -79,18 +58,3 @@ test-windows:
     - windows
     - fast
 
-.csources: &csources_definition
-  stage: test
-  script:
-    - apt-get update -qq
-    - apt-get install -y -qq build-essential git
-    - nim -v
-    - ./koch csources
-    - ./koch xz
-  artifacts:
-    paths:
-      - build/c_code
-
-csources-linux:
-  <<: *csources_definition
-  <<: *linux_set_path_def

ci/nsis_build.bat

@@ -38,8 +38,11 @@ set PATH=C:\Users\araq\projects\mingw32\bin;%PATH%
 cd csources
 call build.bat
 cd ..
-koch boot -d:release || exit /b
+ReM Rebuilding koch is necessary because it uses its pointer size to determine
-koch nsis -d:release || exit /b
+ReM which mingw link to put in the NSIS installer.
+nim c --out:koch_temp koch || exit /b
+koch_temp boot -d:release || exit /b
+koch_temp nsis -d:release || exit /b
 dir build
 move /y build\nim_%NIMVER%.exe build\nim-%NIMVER%_x32.exe || exit /b
 
@@ -49,6 +52,7 @@ set PATH=C:\Users\araq\projects\mingw64\bin;%PATH%
 cd csources
 call build64.bat
 cd ..
-koch boot -d:release || exit /b
+nim c --out:koch_temp koch || exit /b
-koch nsis -d:release || exit /b
+koch_temp boot -d:release || exit /b
+koch_temp nsis -d:release || exit /b
 move /y build\nim_%NIMVER%.exe build\nim-%NIMVER%_x64.exe || exit /b