Included a js_of_ocaml version of superbol in the .vsix

This is a first step towards fixing #76 (but does not entirely fixes
it).  It avoids the need to install an external superbol executable, and
should work on all platforms.

The bundled superbol-free.bc.js is used if the option `superbol.path` is
set to `null`, which is the new default. Some performance investigation
is needed -- if we find out that the js_of_ocaml version is too slow for
practical use, we can make this not be the default.

Author: bclement-ocp

.drom

@@ -11,13 +11,8 @@ let query cmd =
      else None
    with End_of_file -> None
 
-let gitdir =
-  try Sys.getenv "DUNE_SOURCEROOT" with Not_found -> ""
-
-let commit_hash =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%H")
-let commit_date =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%ci")
+let commit_hash = query "git show -s --pretty=format:%H"
+let commit_date = query "git show -s --pretty=format:%ci"
 let version = "0.1.5"
 
 let string_option = function

src/lsp/cobol_cfg/version.mlt

@@ -11,13 +11,8 @@ let query cmd =
      else None
    with End_of_file -> None
 
-let gitdir =
-  try Sys.getenv "DUNE_SOURCEROOT" with Not_found -> ""
-
-let commit_hash =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%H")
-let commit_date =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%ci")
+let commit_hash = query "git show -s --pretty=format:%H"
+let commit_date = query "git show -s --pretty=format:%ci"
 let version = "0.1.5"
 
 let string_option = function

src/lsp/cobol_common/version.mlt

@@ -11,13 +11,8 @@ let query cmd =
      else None
    with End_of_file -> None
 
-let gitdir =
-  try Sys.getenv "DUNE_SOURCEROOT" with Not_found -> ""
-
-let commit_hash =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%H")
-let commit_date =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%ci")
+let commit_hash = query "git show -s --pretty=format:%H"
+let commit_date = query "git show -s --pretty=format:%ci"
 let version = "0.1.5"
 
 let string_option = function

src/lsp/cobol_config/version.mlt

@@ -11,13 +11,8 @@ let query cmd =
      else None
    with End_of_file -> None
 
-let gitdir =
-  try Sys.getenv "DUNE_SOURCEROOT" with Not_found -> ""
-
-let commit_hash =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%H")
-let commit_date =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%ci")
+let commit_hash = query "git show -s --pretty=format:%H"
+let commit_date = query "git show -s --pretty=format:%ci"
 let version = "0.1.5"
 
 let string_option = function

src/lsp/cobol_data/version.mlt

@@ -11,13 +11,8 @@ let query cmd =
      else None
    with End_of_file -> None
 
-let gitdir =
-  try Sys.getenv "DUNE_SOURCEROOT" with Not_found -> ""
-
-let commit_hash =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%H")
-let commit_date =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%ci")
+let commit_hash = query "git show -s --pretty=format:%H"
+let commit_date = query "git show -s --pretty=format:%ci"
 let version = "0.1.5"
 
 let string_option = function

src/lsp/cobol_indent/version.mlt

@@ -11,13 +11,8 @@ let query cmd =
      else None
    with End_of_file -> None
 
-let gitdir =
-  try Sys.getenv "DUNE_SOURCEROOT" with Not_found -> ""
-
-let commit_hash =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%H")
-let commit_date =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%ci")
+let commit_hash = query "git show -s --pretty=format:%H"
+let commit_date = query "git show -s --pretty=format:%ci"
 let version = "0.1.5"
 
 let string_option = function

src/lsp/cobol_indent_old/version.mlt

@@ -11,13 +11,8 @@ let query cmd =
      else None
    with End_of_file -> None
 
-let gitdir =
-  try Sys.getenv "DUNE_SOURCEROOT" with Not_found -> ""
-
-let commit_hash =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%H")
-let commit_date =
-  query ("git -C \""^gitdir^"\" show -s --pretty=format:%ci")
+let commit_hash = query "git show -s --pretty=format:%H"
+let commit_date = query "git show -s --pretty=format:%ci"
 let version = "0.1.5"
 
 let string_option = function