Merge: Fix qualified imports

Solve #1265 and the includes with examples/nitcorn/src/xymus_net.nit

Pull-Request: #1667
Reviewed-by: Alexis Laferrière <alexis.laf@xymus.net>
Reviewed-by: Lucas Bajolet <r4pass@hotmail.com>

diff --cc src/loader.nit
Simple merge

diff --cc tests/sav/base_import_alt3.res
index f9cc83e,968b927..28413fe
--- 1/tests/sav/base_import_alt3.res
--- 2/tests/sav/base_import_alt3.res
+++ b/tests/sav/base_import_alt3.res
@@@ -1,1 -1,1 +1,1 @@@
- alt/base_import_alt3.nit:1,8--21: Error: cannot find module `fail` from `project1`. Tried: ., ../lib/core, ../lib/core/collection, alt, ../lib, ../contrib.
 -alt/base_import_alt3.nit:18,8--21: Error: cannot find module `fail` from `project1`. Tried: ., ../lib/standard, ../lib/standard/collection, alt, ../lib, ../contrib.
++alt/base_import_alt3.nit:18,8--21: Error: cannot find module `fail` from `project1`. Tried: ., ../lib/core, ../lib/core/collection, alt, ../lib, ../contrib.

diff --cc tests/sav/base_import_alt5.res
index d93c6ce,d64fbf2..335fcd3
--- 1/tests/sav/base_import_alt5.res
--- 2/tests/sav/base_import_alt5.res
+++ b/tests/sav/base_import_alt5.res
@@@ -1,1 -1,1 +1,1 @@@
- alt/base_import_alt5.nit:1,8--25: Error: cannot find module `project2` from `project1`. Tried: ., ../lib/core, ../lib/core/collection, alt, ../lib, ../contrib.
 -alt/base_import_alt5.nit:20,8--25: Error: cannot find module `project2` from `project1`. Tried: ., ../lib/standard, ../lib/standard/collection, alt, ../lib, ../contrib.
++alt/base_import_alt5.nit:20,8--25: Error: cannot find module `project2` from `project1`. Tried: ., ../lib/core, ../lib/core/collection, alt, ../lib, ../contrib.

diff --cc tests/sav/base_import_alt6.res
index 0000000,0cc549d..9cdbe5b
mode 000000,100644..100644
--- /dev/null
--- 2/tests/sav/base_import_alt6.res
+++ b/tests/sav/base_import_alt6.res
@@@ -1,0 -1,1 +1,1 @@@
 -alt/base_import_alt6.nit:21,8--20: Error: cannot find `fail`. Tried: ., ../lib/standard, ../lib/standard/collection, alt, ../lib, ../contrib.
++alt/base_import_alt6.nit:21,8--20: Error: cannot find `fail`. Tried: ., ../lib/core, ../lib/core/collection, alt, ../lib, ../contrib.