test: always source test-lib.sh as ./test-lib.sh

There are currently 45 TESTS scripts. 36 of those load
test-lib.sh using '. ./test-lib.sh' and 9 '. test-lib.sh'.

In latter case test-lib.sh is first searched from directories
in PATH (posix) and then from current directory (bash feature).

Changed the 9 files to execute '. ./test-lib.sh'. The test-lib.sh
should never be loaded from directory in PATH.

test/config

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 test_description='"notmuch config"'
-. test-lib.sh
+. ./test-lib.sh
 
 test_begin_subtest "Get string value"
 test_expect_equal "$(notmuch config get user.name)" "Notmuch Test Suite"

test/emacs

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 test_description="emacs interface"
-. test-lib.sh
+. ./test-lib.sh
 
 EXPECTED=$TEST_DIRECTORY/emacs.expected-output
 

test/emacs-address-cleaning

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 test_description="emacs address cleaning"
-. test-lib.sh
+. ./test-lib.sh
 
 test_begin_subtest "notmuch-test-address-clean part 1"
 test_emacs_expect_t '(notmuch-test-address-cleaning-1)'

test/emacs-hello

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 test_description="emacs notmuch-hello view"
-. test-lib.sh
+. ./test-lib.sh
 
 EXPECTED=$TEST_DIRECTORY/emacs.expected-output
 

test/emacs-large-search-buffer

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 test_description="Emacs with large search results buffer"
-. test-lib.sh
+. ./test-lib.sh
 
 x=xxxxxxxxxx # 10
 x=$x$x$x$x$x$x$x$x$x$x # 100

test/emacs-show

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 test_description="emacs notmuch-show view"
-. test-lib.sh
+. ./test-lib.sh
 
 EXPECTED=$TEST_DIRECTORY/emacs-show.expected-output
 

test/emacs-subject-to-filename

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 test_description="emacs: mail subject to filename"
-. test-lib.sh
+. ./test-lib.sh
 
 # emacs server can't be started in a child process with $(test_emacs ...)
 test_emacs '(ignore)'

test/emacs-test-functions

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 test_description="emacs test function sanity"
-. test-lib.sh
+. ./test-lib.sh
 
 test_begin_subtest "emacs test function sanity"
 test_emacs_expect_t 't'

test/help-test

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 
 test_description="online help"
-. test-lib.sh
+. ./test-lib.sh
 
 test_expect_success 'notmuch --help' 'notmuch --help'
 test_expect_success 'notmuch --help tag' 'notmuch --help tag'